Turbo's from Diesels?
- Thread starter powerband
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Only the newer turbos are variable. People have used the older Cummins Holset turbos successfully but I think finding the turbo map on them is difficult because Holset is protective over it. I have never really looked into them though so it's probably out there somewhere. Really it's the same as any other turbo, just finding the best fit for your application.
I too was looking at used turbos for quite a while but finally made the decision to buy a new "Ebay" turbo.
They may be cheaply made, and may or may not last 50,00 miles but they are available in a variety of configurations and are cheaper than dirt. I have seen used diesel turbos sell for a couple hundred bucks with a questionable history, whereas I can buy a new Chinacharger for almost half that and get it in the size I need and it will be new. Another downside of diesel turbos is that they are rarely equipped with an internal wastegate which is a very nice feature if you are trying to simplify the installation.
The way I see it, the first turbo I buy may not be perfect and may need to have a different A/R or wheels after I install and run it. It would suck to buy a new Garrett or Turbonetics just to find out it isn't "right" and have to sell it at a loss after a month of use. Buying one of these cheapies will allow for installation and play time, and if it is the wrong combination, will not cause much grief if it has to be sold cheap or thrown out altogether after a month of tuning. That's my plan anyhow. And after I do get the combination right, I will buy a good quality turbo with the same specs to keep on the shelf and will install it at the first sign of trouble with el cheapo.
Just to give an idea, 135 bucks and its on my doorstep:
http://www.ebay.com/itm/T04E-T3-T4-63-A ... 0a&vxp=mtr
They may be cheaply made, and may or may not last 50,00 miles but they are available in a variety of configurations and are cheaper than dirt. I have seen used diesel turbos sell for a couple hundred bucks with a questionable history, whereas I can buy a new Chinacharger for almost half that and get it in the size I need and it will be new. Another downside of diesel turbos is that they are rarely equipped with an internal wastegate which is a very nice feature if you are trying to simplify the installation.
The way I see it, the first turbo I buy may not be perfect and may need to have a different A/R or wheels after I install and run it. It would suck to buy a new Garrett or Turbonetics just to find out it isn't "right" and have to sell it at a loss after a month of use. Buying one of these cheapies will allow for installation and play time, and if it is the wrong combination, will not cause much grief if it has to be sold cheap or thrown out altogether after a month of tuning. That's my plan anyhow. And after I do get the combination right, I will buy a good quality turbo with the same specs to keep on the shelf and will install it at the first sign of trouble with el cheapo.
Just to give an idea, 135 bucks and its on my doorstep:
http://www.ebay.com/itm/T04E-T3-T4-63-A ... 0a&vxp=mtr
thanks for the responses,
... the basic operational-functional / design differences between diesel and gasoline turbo of comparable displacement? .
thanx
lots to learn as I add also's to race-turbo build specs
> speculative 250 turbo specs:
>> eats roughly 350 cfm NA at 6K.
>>roughly 700 CFM+ at roughly 15 pounds boost
>>roughly translates to 50 pounds air with a pressure ratio of roughly. 2:1 on compressor map ..
seen any E-BAy ricer or typical internal wastegate turbo's make that much push ?.
>>> roughly. 8)
have fun
... the basic operational-functional / design differences between diesel and gasoline turbo of comparable displacement? .
thanx
lots to learn as I add also's to race-turbo build specs
> speculative 250 turbo specs:
>> eats roughly 350 cfm NA at 6K.
>>roughly 700 CFM+ at roughly 15 pounds boost
>>roughly translates to 50 pounds air with a pressure ratio of roughly. 2:1 on compressor map ..
seen any E-BAy ricer or typical internal wastegate turbo's make that much push ?.
>>> roughly. 8)
have fun
thesameguy
Famous Member
powerband":2722ttrj said:
A turbo is essentially a turbo. Plenty of folks run Holsets from Cummins engines in place of big Garrett T3s. On Ford 2.3 turbos, it's a pretty common swap.
powerband":1ed8ebn7 said:
Your airflow does not double with boost like that. The airflow through the carb and turbocharger both will be higher but more importantly the air will be much more DENSE.
Check out this calculator I found recently. I plugged in some basic numbers for you, but you can play with the numbers (VE, and rpm etc) and hit "refresh maps" at the bottom and it will graph the airflow for you. This thing is great. 8) Remember, our engines with the godawful log head do not flow anywhere near 90 percent Volumetric efficiency. You can choose other turbos from the list, I included the ones I was looking at for my 200. Several of them are ebay specials.
http://www.squirrelpf.com/turbocalc/ind ... ap_sel4=79
TurboBronco
Active member
I've seen a lot of articles and a few build threads that have used the GM 6.5 turbo successfully.
The squirrelpf.com website is really useful to try different scenarios and see what turbo's fit your specs best. I've been looking to turbo the six in my bronco and based on what I'm trying to achieve, 8 lbs of boost in at 2500 rpm will get me right where I want to be. The 60-1 and 62-1 turbos look like the best fit so far.
The squirrelpf.com website is really useful to try different scenarios and see what turbo's fit your specs best. I've been looking to turbo the six in my bronco and based on what I'm trying to achieve, 8 lbs of boost in at 2500 rpm will get me right where I want to be. The 60-1 and 62-1 turbos look like the best fit so far.
TurboBronco
Active member
I've read of several people using the turbo from a GM 6.5 diesel on the inline 6. Reportedly works very well, boost comes in at about 2000 rpm and is fully boosted at 2750.
x2 on www.squirrelpf.com and their turbo calculator. Plots your turbo's expected performance across many different maps.
x2 on www.squirrelpf.com and their turbo calculator. Plots your turbo's expected performance across many different maps.
country fried 6
Well-known member
i'll just say that '01-'02 Duramax, all 7.3l Powerstroke TRUCK (not van), and earlier Cummins turbos have internal wastegates and are not VNT. not saying any of these are the right one to use.
A
Anonymous
Guest
From reasearching this a little I have read that the older powerstroke turbos are a GTP38. The hotside AR should be somewhere between .84 and 1.15 (there seems to be confusion on which it really is, so maybe there is a year or application difference?). Though a bit hard to read, here is a compressor map: http://wright-here.net/files/compressor_maps/Garret Maps/GTP38zoom.jpg
With a 250 you're down about 200 cubes from a 7.3 so you'd have to turn your engine a fair bit harder than a powerstroke does (which isn't very hard) to get it to spool. The only other thing is diesel turbos often have unique flanges and/or parts so swapping out to something else requires fab work. The powerstroke turbos aren't an exception to this.
I don't know about other diesel turbos since I ususally try to keep my ford "ford/aftermarket" rather than "ford/other manufacturer" when modding. Just the way I like it
With a 250 you're down about 200 cubes from a 7.3 so you'd have to turn your engine a fair bit harder than a powerstroke does (which isn't very hard) to get it to spool. The only other thing is diesel turbos often have unique flanges and/or parts so swapping out to something else requires fab work. The powerstroke turbos aren't an exception to this.
I don't know about other diesel turbos since I ususally try to keep my ford "ford/aftermarket" rather than "ford/other manufacturer" when modding. Just the way I like it
